feat(invoice): add send route

pkg/invoice/report/html_test.go

@@ -0,0 +1,79 @@
+package report
+
+import (
+	"html/template"
+	"testing"
+)
+
+func TestOffsetHTags(t *testing.T) {
+	tests := []struct {
+		name     string
+		html     string
+		amount   int
+		expected string
+	}{
+		{
+			name:     "simple offset",
+			html:     `<h1>Main</h1><h2>Sub</h2>`,
+			amount:   2,
+			expected: `<h3>Main</h3><h4>Sub</h4>`,
+		},
+		{
+			name:     "offset beyond h6",
+			html:     `<h5>Almost max</h5><h6>Max</h6>`,
+			amount:   3,
+			expected: `<h6>Almost max</h6><h6>Max</h6>`,
+		},
+		{
+			name:     "negative offset",
+			html:     `<h2>Heading</h2><h3>Subheading</h3>`,
+			amount:   -2,
+			expected: `<h1>Heading</h1><h1>Subheading</h1>`,
+		},
+		{
+			name:     "no h tags",
+			html:     `<p>Paragraph</p>`,
+			amount:   2,
+			expected: `<p>Paragraph</p>`,
+		},
+		{
+			name:     "mixed content",
+			html:     `<h1>Title</h1><div><h2>Inner</h2></div>`,
+			amount:   1,
+			expected: `<h2>Title</h2><div><h3>Inner</h3></div>`,
+		},
+		{
+			name: "real one",
+			html: `<p>Hello</p>
+
+<pre><code class="language-info">duration: 1h 43min
+</code></pre>
+
+<h1 id="adökfjaösldkjflaa">adökfjaösldkjflaa</h1>
+
+<h2 id="asdfads">ASDFADS</h2>
+
+<h3 id="adllglggl">adllglggl</h3>`,
+			amount: 3,
+			expected: `<p>Hello</p>
+
+<pre><code class="language-info">duration: 1h 43min
+</code></pre>
+
+<h4 id="adökfjaösldkjflaa">adökfjaösldkjflaa</h4>
+
+<h5 id="asdfads">ASDFADS</h5>
+
+<h6 id="adllglggl">adllglggl</h6>`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := offsetHTags(tt.amount, template.HTML(tt.html))
+			if string(got) != tt.expected {
+				t.Errorf("OffsetHTags() = %q, want %q", got, tt.expected)
+			}
+		})
+	}
+}